Assembly of the cardan transmission (Chevrolet Niva 1)

Assemble the cardan shafts in the reverse order of disassembly, taking into account the following:

• apply 3-4 g of Fiol-1 or Fiol-2U grease evenly to the splined joints;
• when connecting parts, align the marks applied to the detachable parts before disassembling;
• after assembling the splined connection, pressing the seal by 0.3-0.5 mm with an axial load, squeeze the collar on the fork groove.

Assemble the cardan joint in the following sequence:

• after removing the old thickened grease, lubricate the inner surface of the bearing housings with Fiol-2U grease (0.8-1.2 g per bearing). The crosspiece pins should not be coated with grease to avoid the formation of an air cushion during assembly. Insert the crosspiece into the fork holes. Press the bearing into one fork hole and install the retaining ring 1 into the fork groove (figure 3-47) 1.56 mm thick. Press the bearing into the other hole of the fork until the opposite bearing stops against the end of the retaining ring. The pressing force should not exceed 15,000 N (1,500 kgf).

Using gauge 2, which has 4 and 3 petals of different thicknesses, determine which of the petals fits tightly into the gap H between the bottom of the bearing and the end of the fork groove, and install a retaining ring of the same thickness as the petal.



If the petal of the smallest thickness (1.45 mm) does not fit into the gap H, then ring 1 must be replaced with another one, 1.4 mm thick, and the specified operations must be repeated.

If the petal of the greatest thickness (1.67 mm) does not fit tightly into the gap H, it is necessary to install a ring of thickness 1.67 mm into this gap, remove ring 1 and repeat all the specified operations.

Note: It is recommended to measure the gap with the gauge petals from the pipe side. Retaining rings are supplied in spare parts in eight sizes (by thickness), each of which has a specific color:

• 1.45 - unpainted;
• 1.48 - yellow;
• 1.52 - brown;
• 1.56 - blue;
• 1.60 - black;
• 1,64; 1,67; 1.40 - colors are not indicated and their thickness is determined by measurement.

After installing the retaining rings, hit the hinge forks with a hammer with a plastic striker. Under the impact, the gap between the bearing bottom and the retaining ring is selected and gaps appear between the bearing housings and the ends of the crosspiece pins within 0.01-0.04 mm. After assembly, check the ease of turning the hinge forks.